Fixed bug #736

Don't use the SSE cache instruction in MMX code if SSE isn't available. :)
libsdl-org · Dec 16, 2009 · 755b845 · 755b845
1 parent 4d4d63a
commit 755b845
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/video/SDL_blit_copy.c b/src/video/SDL_blit_copy.c
@@ -65,7 +65,9 @@ SDL_memcpyMMX(Uint8 * dst, const Uint8 * src, int len)
 
     __m64 values[8];
     for (i = len / 64; i--;) {
+#ifdef __SSE__
         _mm_prefetch(src, _MM_HINT_NTA);
+#endif
         values[0] = *(__m64 *) (src + 0);
         values[1] = *(__m64 *) (src + 8);
         values[2] = *(__m64 *) (src + 16);